Example 5 - Chapter 12 Class 8 Factorisation

Last updated at August 13, 2026 by

Example 5 - Factorise 4y^2 - 12y + 9 - Chapter 14 Class 9 Factorisatio

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Transcript

Example 5 Factorise 4๐‘ฆ^2 โ€“ 12y + 9 4๐‘ฆ^2 โ€“ 12y + 9 = ใ€–(2๐‘ฆ)ใ€—^2 โˆ’ 12๐‘ฆ+(3)^2 = ใ€–(2๐‘ฆ)ใ€—^2 โˆ’ 2ร—2๐‘ฆร—3 +(3)^2 = ใ€–(2๐‘ฆ)ใ€—^2+ (3)^2 โˆ’2ร—2๐‘ฆร—3 Using (๐‘Žโˆ’๐‘)^2 = ๐‘Ž^2+๐‘^2โˆ’2๐‘Ž๐‘ Here ๐‘Ž=2๐‘ฆ, ๐‘=3 = (ใ€–๐Ÿ๐’šโˆ’๐Ÿ‘)ใ€—^๐Ÿ

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